# Scrapy settings for Zhiyouji project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
#     https://docs.scrapy.org/en/latest/topics/settings.html
#     https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#     https://docs.scrapy.org/en/latest/topics/spider-middleware.html

# BOT_NAME = 'Zhiyouji'




# Crawl responsibly by identifying yourself (and your website) on the user-agent
#USER_AGENT = 'Zhiyouji (+http://www.yourdomain.com)'

# Obey robots.txt rules
# ROBOTSTXT_OBEY = True

# Configure maximum concurrent requests performed by Scrapy (default: 16)
#CONCURRENT_REQUESTS = 32

# Configure a delay for requests for the same website (default: 0)
# See https://docs.scrapy.org/en/latest/topics/settings.html#download-delay
# See also autothrottle settings and docs
#DOWNLOAD_DELAY = 3
# The download delay setting will honor only one of:
#CONCURRENT_REQUESTS_PER_DOMAIN = 16
#CONCURRENT_REQUESTS_PER_IP = 16

# Disable cookies (enabled by default)
#COOKIES_ENABLED = False

# Disable Telnet Console (enabled by default)
#TELNETCONSOLE_ENABLED = False

# Override the default request headers:
#DEFAULT_REQUEST_HEADERS = {
#   'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
#   'Accept-Language': 'en',
#}

# Enable or disable spider middlewares
# See https://docs.scrapy.org/en/latest/topics/spider-middleware.html
#SPIDER_MIDDLEWARES = {
#    'Zhiyouji.middlewares.ZhiyoujiSpiderMiddleware': 543,
#}

# Enable or disable downloader middlewares
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#DOWNLOADER_MIDDLEWARES = {
#    'Zhiyouji.middlewares.ZhiyoujiDownloaderMiddleware': 543,
#}

# Enable or disable extensions
# See https://docs.scrapy.org/en/latest/topics/extensions.html
#EXTENSIONS = {
#    'scrapy.extensions.telnet.TelnetConsole': None,
#}

# Configure item pipelines
# See https://docs.scrapy.org/en/latest/topics/item-pipeline.html
#ITEM_PIPELINES = {
#    'Zhiyouji.pipelines.ZhiyoujiPipeline': 300,
#}

# Enable and configure the AutoThrottle extension (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/autothrottle.html
#AUTOTHROTTLE_ENABLED = True
# The initial download delay
#AUTOTHROTTLE_START_DELAY = 5
# The maximum download delay to be set in case of high latencies
#AUTOTHROTTLE_MAX_DELAY = 60
# The average number of requests Scrapy should be sending in parallel to
# each remote server
#AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# Enable showing throttling stats for every response received:
#AUTOTHROTTLE_DEBUG = False

# Enable and configure HTTP caching (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
#HTTPCACHE_ENABLED = True
#HTTPCACHE_EXPIRATION_SECS = 0
#HTTPCACHE_DIR = 'httpcache'
#HTTPCACHE_IGNORE_HTTP_CODES = []
#HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'


DOWNLOADER_MIDDLEWARES = {
   'Zhiyouji.middlewares.ZhiyoujiDownloaderMiddleware': 543,
}
from scrapy_redis.dupefilter import RFPDupeFilter
SPIDER_MODULES = ['Zhiyouji.spiders']
NEWSPIDER_MODULE = 'Zhiyouji.spiders'

USER_AGENT = 'scrapy-redis (+https://github.com/rolando/scrapy-redis)'

# 去重过滤使用scrapy-redis提供的RFPDupeFilter
DUPEFILTER_CLASS = "scrapy_redis.dupefilter.RFPDupeFilter"
# 请求调度使用scrapy-redis提供的调度器
SCHEDULER = "scrapy_redis.scheduler.Scheduler"
# 开启调度器
SCHEDULER_PERSIST = True
# SCHEDULER_QUEUE_CLASS = "scrapy_redis.queue.SpiderPriorityQueue"
# SCHEDULER_QUEUE_CLASS = "scrapy_redis.queue.SpiderQueue"
# SCHEDULER_QUEUE_CLASS = "scrapy_redis.queue.SpiderStack"

ITEM_PIPELINES = {
    'Zhiyouji.pipelines.ZhiyoujiPipeline': 300,
    'scrapy_redis.pipelines.RedisPipeline': 400,
}

LOG_LEVEL = 'DEBUG'

# Introduce an artifical delay to make use of parallelism. to speed up the
# crawl.
DOWNLOAD_DELAY = 1

# 指定redis的主机和端口
REDIS_URL = 'redis://127.0.0.1:6379'

USER_AGENT_POOL = [
    "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0) ",
    "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0; DigExt) ",
    "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0; TUCOWS) ",
    "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0; .NET CLR 1.1.4322) ",
    "Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0 ) ",
    "Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0) ",
    "Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0; by TSG) ",
    "Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0; .NET CLR 1.0.3705) ",
    "Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0; .NET CLR 1.1.4322) ",
    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; en) Opera 8.0 ",
    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0) ",
    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0;) ",
]